public function testGetKeys()
{
$pagination = ['pageSize' => 2];
$simpleArray = [['name' => 'zero'], ['name' => 'one'], ['name' => 'tow']];
$dataProvider = new ArrayDataProvider(['allModels' => $simpleArray, 'pagination' => $pagination]);
$this->assertEquals([0, 1], $dataProvider->getKeys());
$namedArray = ['key1' => ['name' => 'zero'], 'key2' => ['name' => 'one'], 'key3' => ['name' => 'two']];
$dataProvider = new ArrayDataProvider(['allModels' => $namedArray, 'pagination' => $pagination]);
$this->assertEquals(['key1', 'key2'], $dataProvider->getKeys());
$mixedArray = ['key1' => ['name' => 'zero'], 9 => ['name' => 'one'], 'key3' => ['name' => 'two']];
$dataProvider = new ArrayDataProvider(['allModels' => $mixedArray, 'pagination' => $pagination]);
$this->assertEquals(['key1', 9], $dataProvider->getKeys());
}
